[ovirt-users] Disk migration eats all CPU, vms running in SPM become unresponsive

Hello: I am experiencing some troubles with ovirt nodes: When a node is selected as SPM and I move a disk between storage domains, it seems that migration process eats all CPU and some VMs (running on the SPM) hang, others lose network connectivity. The events tab at Ovirt Engine reports the CPU exceeding the defined threshold and then reports that VMs in such host (SPM) are not responding. How can I debug this? Why do the VMs become unresponsive or lost network connectivity when the host CPU goes too high? I have attached a screenshot of the ovirt-engine events, and the relevant engine.log My setup: oVirt Engine Version: 3.4.0-1.el6 (Centos 6.5) Nodes: Centos 6.5 vdsm-4.14.6-0.el6 libvirt-0.10.2-29.el6_5.9 KVM: 0.12.1.2 - 2.415.el6_5.10 (jenkins build) Regards Federico